Heat insulation curtain



July 2, 1940.

E. R. sin-0N HEAT INSULATION CURTAIN- -2 Sheets-Sheet 1 Filed Jan. 28, 1938 gwue/wbo b Elbert Rfiitton I 5% mm July 2, 1940., E R SITTON 'zzoww HEAT INSULATION CURTAIN Filed Jan. 28, 1938 2 Sheets-Sheet 2 3 la- Elbert msitto a 1 ofimhficaw Patented July 2, 1940 I UNITED STATES ammo near msULanoN con-ram Elbert it. Sitton, Houston, Tex. pplication January 28. 193a. Serial No. 187,375

4 Claims.

sulating material where thesameis used' upon the outer surfaces of heated containers.

In the insulating of hot upright containers or vessels such as fractionating towers, stabilizers, reaction chambers and the like, various types of heat insulating materials are employed. Among these are felted rolls or blankets of heat resisting flbers, such as mineral wool, rock wool, slag wool, lead wool, and the like, is quilted between layers of metal fabric or netting. These blankets of heat insulating materials are then applied to the exterior of the vessel or container to be insulated. The supports ordinarily employed merely furnish rests for the lower edges of the sheets of insulating material but in use the sheets of material sag and expose the surface of the container and are generally unsatisfactory after a comparatively short time. I It is an object of my invention to provide means for supporting insulating material either when in the form of sheets or when said material is in the form of blocks of various sizes.

I desire to provide a hanger of strong and 26 somewhat flexible material, which is supported in spaced relation from the wall of the container, and thus allow the heat insulating materials to be placed beneath the same and attached firmlyso that there is no opportunity for sagging or displacement of the materials from their original position.

The invention includes the placing of hangers along the outer surface of the container in relations spaced sufficiently close to' satisfactorily 38 support the particular insulating material which is employed.

It is a further object. of the invention to provide supporting hangers of the character noted which may also serve as a support for an outer o sheathing orweather coating placed outside of the insulatinglayer said hangers andsaid sheathing being so securedas to allow expansion of the insulated device.

The invention resides pa? struction and arrangement the supports forming the subject of the invention andreference is made to the drawings herewith wherein the same is illustrated. I

In the drawings, Fig. 1 is a side view partly in-elevation and partly in broken section illustrating the use of my insulation support.

Fig. 2 'u a broken detail'illustrating the use of my invention with insulating material arranged.

mum.

'in the usual manner.

cularly in the con- (Cl 154-44) The invention relates to supports for heatin- Fig. 3 is an enlarged sectional detail illustrating the manner of attachment of the materials to the supporting hangers.

Fig. 4 is a similar sectional detail taken on the' plane 4-4 of Fig. 3. 5

Fig. 5 is a perspective view of one type of insulating unit which may be employed in connection with my invention.

Fig. 6 is a broken detail showing the use of another embodiment of my hanger. v 10 Fig. 7 is a vertical section through the insulating device shown in Fig. 6.

I have shown my invention as employed upon a tower or container i of sheet metal constructed To support the insulating 15 material upon theouter surface of the tower I contemplate placing on the outer surface thereof horizontally aligned brackets 2 which are preferably of angle iron, the size .of which is adjusted to the thicknessloi' the layer of insulating 20 material which is to be used. These brackets may be placed close together or, if desired, a hoop of angle iron may be attached to the outer surface of the tower, although ordinarily spaced brackets will be suflicient. These brackets are 26 attached to the surface of the tower by welding or any other desired means and the horizontally extending web or support is formed with openings therein to receive bolts by means of which my supporting hangers are secured to the brackets.

The hangers which I prefer to use are made of straps of sheet metal of proper thickness to support the load of the insulating material. It is to vbe understood that the particular construction of these hangers may be varied both as to material andform without departing from the spirit of theinventio'n. These straps shown at I in the diiferent' views are provided with openings at the upper end to receive bolts shown best 40 at I in Fig. 3. These bolts extend through the horizontally disposed upper end of the strap and serve to form a rigid attachment between the bracket 2 and the hanger. The hanger extends downwardly from the outer edge of the bracket 46 and is provided with spaced openings 5 therein through which attaching wires or rings may extend.

The rows of brackets 2 are arranged circumferentially around the tower and are spaced apart 60 vertically so as to form in effect a continuous hanger extending the full length of the tower, each hanger or strap being of sufficient length to accommodate the weight of the layer of material which it is to' support.

blanket of felted fibers of mineral wool and the like arranged between two sheets of woven wire or screen. In Fig. 1 the size of these sheets is indicated at 6 and the hangers are spaced apart to accommodate the width of these sheets. I place the hanger in position and insert the edge of a sheet .6 underneath the hanger to project beyond the same at one side, and the other side, indicated at l, abuts against the edge of the next adjacent sheet. These sheets are then secured together by sewing a-wire 8 along the seam provided between the two adjacent sheets. These sheets are then secured to the hangers by loops of wire indicated at 9, which 'are extended through the thickness of the sheet of insulating material and then looped through one of the openings 5 in the hanger and tied or twisted so as to form a firm attachment of the sheet ofmaterial to the hanger.

As many of these loops 9 will be employed as are necessary to firmly support the adjacent sheet of insulating material. When the entire outer surface of the tower is thus covered with insulating material firmly anchored in place, an outer weatherproof covering is then employed. This may be in'theform of weatherproof cement of the desired heat-resisting qualities, but I have shown in Fig. 1 the use of a sheet metal covering or sheath to entirely sur round the outer surface of the insulating layer.

These sections of sheet metal are formed circumferentially around the tower and are supported in place each upper ring of sheeting overlapping the next lower adjacent one so that moisture and rain will be prevented from entering under the sheathing". Each particular.

layer of material will be secured in place by loops of wire I ll, as shown in Fig. 1, said loops going.

through openings'in the upper margin of the sheathing ring or layer l8 and then strung thru an opening in the hanger. In this manner the ng material. 70

' hanger will support not only the insulating layer itself but also the outer sheath ofweatherproofing material.

, In Fig. 5 I have shown another form in which insulating material may be obtained. These blocks II are preferably provided with reenforcing wires or rods. There are longitudinal rods l2 at each side of the block and transverse wires or rods I 3 engaging around the inner surfaceof the block andthen bent around the side of the block sufliciently to secure it in position on the block. Grooves l4 may be formed in the edge of the block to provide support for the cross wires or rods. Blocks thus formed may be placed in position on the outer surface of the tower and secured to the hangers as shown in Figs. 3 and 4.

The crosswires l8 maybe connected with the hangers 3 by loops of wire I5. when thus placed at the outer surface of the tower and wired iii position between the hanger andthe .outer surface of the tower they will be held firmly in position and will not be allowed to sag or move away from the outer surface of the tower. The hanger straps ,3 to which these blocks are secured will be placed a distance apart normally about equal to the width of the block of insulatdisclosed relative to the sheets or blankets of insulating material.

Another form in which insulating material may come is in the shape of elongated bricks or blocks of smaller dimension than that shown in Fig. 5-.

It will thus be possible to secure the blocks in place in a manner similar to that similar means.

These blocks mayb'e built up around the outer surface of the tower or tank in the same manner as with the previously described insulating maaterial. In securing these blocks in position hangers 3 are used as in the previous embodi- 5 ments and wires or hoops of steel, shown at l6, may be employed and such hoops will be spaced apart longitudinally of the container or tower so as to tie these blocks in position on the outer surface of the container. These hoops l6 which are thus employed will be secured to the hanger 8 by loops of wire l5 similar to those shown in Fig. 3. This isdisclosed in Fig. 2 andwill be readily understood. However, these wire hoops it will be possible to securely support the insulating material in position against the wall of the tower or container so that it may not sag or be displaced from its proper position on theouter surface of the container. Further, in all of the embodiments in which the insulating material may come it will be possible to furnish an outer weatherproofing cover. either of metal sheeting or of cementitious material as is. now common. The structure of the hanger is simple. It is easily and quickly applied and furnishes a detachable connection between the insulating material and the container which allows removal or repair without a material loss of time in the change. This hangerwill, therefore, be superior to the usual means of attaching the insulating material in position and will also cheapen the cost of insulation.

Inthe form of support shown in Figs. 6 and 7, I contemplateforming a bracket 2' which may be secured to'the outer surface of the tower I and project radially therefrom as in the previous embodiment. The heat insulating material 6 is secured in position, however, by a diilerent type of support. I have anouter layer of sheet metal I! which is placed over the layer of insulating material, said sheet material having inwardly extending. flanges or brackets 20- thereon which may engage above the brackets 2' and be secured thereto by bolts 2|. g

The layer of sheet metal 19 depends downwardly in spaced relation to the wall of the tower and bears against the outer-face of the insulating material. To secure the outer covering I9 firmly in position so as to support the insulating material I extend, transversely of. the insulating material, pins having heads 23 thereon to bear against the sheet metal I9. The inner ends are extended through the insulating material and hooked into the inner wall of thewoven wire onthe insulating material and caught therein so as to hold theouter sheathing in position and connect the insulating material therewith.

'In this form the inwardly extending bracket or flange III upon this sheet metal covering maybe cut out of the wall of the sheet metal as shown at '24 in Fig. 6, or manifestly it could be securedto the sheetmetal by welding, riveting or other In this particular form the insulating covering may be secured to the sheet metal is before the assembled combination is hung in position. It will be only necessary after the insulating bracket hasbeenseeuredtotbesheetmetaltohangthell same upon the brackets 2' and tobolt it securely in. position. 4

This form of my invention is particularly easy to assemble. It is simple and inexpensive and forms a valuable feature of my invention.

What is claimed as new is: 1. A metal container for hot fluid, a plurality of circumferentially arranged brackets on the outer surface thereof, hangers depending vertically downwardly from the outer sides or said brackets in positionsspaced in parallel relation from the tower and means to tie said heat insulating material to said hangers at spaced points along said hangers. I i

insulating material between said straps and said 3. Means i'or heat insulating a cylindrical upright heated surface comprising a plurality of horizontally arranged rows 01' brackets positioned circumferentially around said surface, metallic hangers depending from the outer ends of said brackets, the lower ends oi said hangers being free to move laterally, a layer of heat insulating material between said hangers and said surface, and means to secure said material to.said hangers at spaced'points along the length of said hangers.

4. An insulation for containers having a vertical wall, a bracket projecting therefrom, insulation hangers suspended from said bracket, to hang along the vertical walL-the lower ends of said hangers hanging free in spaced relation to said wall, said brackets and hangers providing a spacing between the inside of the hanger and said vertical wall of substantially the thickness of the insulation, and insulating material attached to 20 the inside of said hangers and thus suspended beneath said bracket so that there is no tendency for the insulation to sag.

mam a. srrron. i 

